Single interrupt line for all interrupts
Only one line is used to trigger interrupts: RX, TX and ERROR interrupt go all through that line, undifferentiated.
Menu path: (Top) → Device Drivers → SPI hardware bus support → Designware SPI controller driver
config SPI_DW_PORT_0_INTERRUPT_SINGLE_LINE bool "Single interrupt line for all interrupts" default y depends on
SPIhelp Only one line is used to trigger interrupts: RX, TX and ERROR interrupt go all through that line, undifferentiated.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)